Smallest of three consecutive primes whose average is a triangular number.

Terms

a(0) =18713a(1) =27253a(2) =35227a(3) =45433a(4) =138587a(5) =251677a(6) =283861a(7) =425489a(8) =462221a(9) =463189a(10) =486583a(11) =634493a(12) =694409a(13) =826211a(14) =943231a(15) =1103341a(16) =1163557a(17) =1181927a(18) =1214453a(19) =1282387a(20) =1462891a(21) =1509439a(22) =1925681a(23) =1931569a(24) =2425487a(25) =2970689a(26) =3041803a(27) =3324323a(28) =3605939a(29) =3627451